Rotary valve.



G. E. MEAD.

ROTARY VALVE. APPLICATION 111.111) JUNE 1, 1910.

7, 40 Patented 00c. 24, 1911.

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G. E. MEAD.

ROTARY VALVE.

Patented Oct. 24, 1911.

2 8HEETS-BHEET 2.

APPLICATION FILED JUNE 1, 1910.

2 M \N N M W .0 MW \R 3 @N Q Q 0 W N m N N m N Q hh Q N Q Q E E a QN 11'! N H w s .w\ W 3 N N &N QM I M ..m M 4 I To all whom it may concern:

Be it known that I, CYRUS E. MEAD, acitizen of the United States, residing atcrane E. MEAD, or DAYTON, OHIO.

Ronni: VALVE.

Specification or Letters'ra'tent.

Application filed June 1, 1910. Serial No. 564,513.

Patented Oct. 24, 1911.

Dayton, in the county of Montgomery and State of Ohio, have invented certain new and-useful Improvements in Rotary Valves;

and I- do declare the following to be a full,

'clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

.'This invention relates to new and useful improvements inrotary valves. and more specifically to the valves of such type for gas engines.

The object of the invention is to provide a rotary valve whereby the wear is evenly distributed and lubrication of the parts is greatly facilitated, as hereinafter more fully described.

Referring to the accompanying drawings, Figure 1 is an end elevation of a gas engine partially in section, showing my invention applied thereto. Fig. 2 is a section on the line bb of Fig. 1, and Fig. 3 is a-section on the line aa of Fig. 2.

In the drawings 1 represents a cylinder of a gas engine, the same being provided with the usual water jacket 2. Reciprocating within the cylinder 1 is a piston 3 joined to a crank shaft 4. by a connecting rod 5. The crankshaft 4 is journaledin a crank casing 6 upon which the cylinder 1 is mounted. Mounted in suitable bearings 7 on each side and at the upper end of the cylinder 1, is a rotary inlet valve 8 and a rotary exhaust valve 9. These valves are provided with ports 10 which register, at the proper time, with ports 11 in the cylinder 1 and with ports 12 in inlet and exhaust passageways 13 and 14. The said valves 8' and 9 are provided with stems 15 on which are splined by means of feathers 29, spiral gears 16 driven from the crank shaft 4 by any suitable form of gearing such as the following: The spiral gears 16 mesh with worm gears 17 mounted on a shaft 18 journaled in bearings 19, The shaft 18 is provided with a miter gear 20-which meshes with a similar gear 21 on a vertical shaft 22. The shaft 22 1s journaled inbearings 23, and on its lower end is provided with a miter gear24 which 'meshes with a miter gear 25 on the crank shaft 4. The arrangement of the above train of gearing 1s such that the ratio of rotation between the crank shaft 4 and the valves 8 and 9 is four to one. All of the above described mechanlsni is well known, it therefore forms no part of the present invention;

As shown in the drawings, the cams 26 are adapted to reciprocate the valves twice at each revolution and to a slight extent only, but it will be understood that the invention is not limited to this particular construction as it may at times be found .advisable to reciprocate the valves more frequently and to a greater extent. the reciprocatingmovement of the valves the lubricant, which may enter the bearing through an o ening 31 or by other means, will be sprea over the valves in an eflicient manner.

To allow the valves 8 and 9 to move independently of their driving gears 16, said gears are splined to the stems 15 by feathers 29, 'as before stated; and to hold said gears housing forming a bearing for said valve During and provided with ports adapted to regisand imparting the continuously rotating ter with the ports in the valve, said housing movement to said valve. i v 10 also inclosing the cam slot, a pin mounted In testimon whereof I aflix my signature,

in said housing and lying within the cam in presence 0 two witnesses.

slot, and adapted to impart longitudinal re-' CYRUS E MEAD. ciprocating movement to the valve during Witnesses: its rotation, and means on the exterior of M. A. MADDEN, the housing engaging the end of the valve MATIHEW SIEBLER. 

